Nutrient remobilization under stress
noun phrasePronunciation: /ˈnjuːtriənt ˌriːˌmoʊbɪləˈzeɪʃən ˌʌndər ˈstres/
The translocation of essential nutrients (nitrogen, phosphorus, potassium) from vegetative tissues to reproductive organs or storage tissues during abiotic stress conditions that limit nutrient availability or uptake. This process involves upregulation of transporter proteins and catabolism of non-essential proteins to maintain nutrient status in critical tissues.
Plain English
The plant's strategy to redistribute its stored nutrients away from leaves toward seeds or roots when nutrient uptake is limited by stress.
Etymology & History
Usage
"Nutrient remobilization under drought stress shifts nitrogen allocation toward grain development while reducing vegetative biomass."
Style guide notes: Use plural 'nutrients' when discussing multiple elements; specify element names when precision is required.
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Frequently Asked Questions
How does nutrient remobilization help plants produce seeds during drought?
By redirecting nitrogen and phosphorus to grains, plants maintain reproductive success despite limited soil nutrient availability.
Which nutrients are most easily remobilized during stress?
Nitrogen and phosphorus are highly mobile; potassium and calcium remobilize more slowly from structural tissues.
Why Test Candidates on This?
Important for understanding yield maintenance mechanisms in water-limited environments and breeding for drought-tolerant crop varieties.
Required skill level: Senior